(19)
(11) EP 1 431 611 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
09.03.2005 Bulletin 2005/10

(43) Date of publication A2:
23.06.2004 Bulletin 2004/26

(21) Application number: 03104668.3

(22) Date of filing: 12.12.2003
(51) International Patent Classification (IPC)7: F16G 3/00
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 19.12.2002 US 324904

(71) Applicant: THE GOODYEAR TIRE & RUBBER COMPANY
Akron, Ohio 44316-0001 (US)

(72) Inventors:
  • Gregg, Michael John William
    Lincoln, Nebraska 68502 (US)
  • Nguyen, Hong Xuan
    Lincoln, Nebraska 68516 (US)

(74) Representative: Kutsch, Bernd 
Goodyear S.A., Patent Department, Avenue Gordon Smith
7750 Colmar-Berg
7750 Colmar-Berg (LU)

   


(54) Splicing joint and method for synchronous drive belt


(57) A splice joint is for joining first and second synchronous drive belt ends (22, 24) of a belt type comprising a reinforcement material layer (19, 20) covering a base layer (17) formed from a first thermoplastic material. The joint comprises a fused portion of the base layer (17) of the first and second belt ends (22, 24) that define a splice region. At least one coating layer (62) of thermoplastic material overlaps the reinforcement layer of the end portions in the splice region. The coating layer (62) is comprised of a second elastomeric material intended to melt and penetrate into interstices of the reinforcement material layer (19, 20) while within the mold press. Migration of the base layer material through the reinforcement material layer (19, 20) to the pulley-engaging outer surface is thereby inhibited. The second elastomeric material composing the coating layer may be selected to provide desired frictional and wear characteristics.









Search report